Navegando por Autor "SOARES, Leonardo Carvalho"

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    Desenvolvimento de um sistema para determinação de glicose usando análise por injeção em batelada assistida por fotoeletroquímica
    (Universidade Federal do Maranhão, 2019-03-22) SOARES, Leonardo Carvalho; DAMOS, Flávio Santos; 846255703-87; http://lattes.cnpq.br/0915687070195770; DAMOS, Flávio Santos; 846255703-87; http://lattes.cnpq.br/0915687070195770; SILVA, Iranaldo Santos da; http://lattes.cnpq.br/1281555528581499; ARAÚJO, Adriana Barbosa; http://lattes.cnpq.br/1008844766307732
    This work describes the development of a novel method for glucose detection exploiting a photoelectrochemical-assisted batch injection analysis cell designed and constructed with aid of 3D printer technology. The PEC-BIA cell was coupled to a LED lamp in order to control the incidence of light on the Cu2O/Ni(OH)2/FTO photoelectro-active platform. The electrochemical characteristics of Cu2O/Ni(OH)2/FTO photoelec-troactive platform were evaluated by cyclic voltammetry, amperometry and electro-chemical impedance spectroscopy. The PEC-BIA cell presented linear response range, limit of detection and sensitivity of 1 – 1000 μmol L-1, 0.59 mol L-1 and 0.578 A L mol-1, respectively. The PEC-BIA method has presented a mean value of the recovery values of 97.0 % to 102.0% when it was applied to glucose determination in artificial blood plasma samples which indicates the promising performance of the proposed sys-tem to determine glucose.